Colosseum's fall Solana hackathon closes November 2, and winning teams get $250,000 in pre-seed.
Airdrops pay you for using products. Hackathons and grants pay you for building them, and far fewer people compete.
Still open as of October 20, 2026: Colosseum (September 28 to November 2, plus an accelerator seat), ETHGlobal Mumbai (November 5 to 7, approval-based, so apply early), Circle's Arc developer grants ($5,000 to $100,000 in USDC, milestone-based) and Arbitrum Trailblazer 2.0 (up to $10,000 per agentic-DeFi build, rolling).
My take: every airdrop you farmed was unpaid market research. Grants are where you finally invoice for it. Ship the smallest working version, not a deck.
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